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(No Model.) 3 Sheets-Sheet 1. J. O. TAFT.

' SWAGING MACHINE. No. 573,051. Patented Dec. 15', 1896 Aillll N0Model.)

3 Sheets-Sheet 2.

' J.G.TAFT.

SWAGING MACHINE.

P tented Dec. 15,1896.

(No Model.) j a sheets-sheet 3-.

J'. 0.; TAFT SWAGING MACHINE. .N0.573,051. Patented Dec. .15, 189.6;

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UNITED STATES PATENT OFFICE.

JEROME O. TAFT, OF PROVIDENCE, RIIODE ISLAND.

'SWAGING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 573,051 dated December15, 1896. Application filed $eptember 1'7, 1894. Serial No. 523,304. (Nomodel.)

To all whom zit may concern.-

Be it known that I, JEROME O. TAFT, a citizen of the United States,residing at Providence, in the State of Rhode Island, have invented anew and useful Improvement in Swaging-Machines, of which the followingis a specification.

My invention relates to sWaging-machines in which the dies are held in astationary head; and it consists in the employment of atoggle-jointed-lever connection between the dies and the beaters and inmeans for changing the closing movement of the sets of opposite diesindependently of each other, as

hereinafter fully set forth.

Figure 1 represents a top view of a swaging-machine embodying myinvention, a portion of the die-holding head being broken away to showthe concealed parts. Fig. 2 represents a front elevation with a portionof the front plate broken away. Fig. 3 represents a vertical sectiontaken in the line of the axis of the machine. Fig. 4 represents avertical section taken in the line a; a: of Fig. 3. Fig. 5 represents anend view of the sleeve which carries the heaters. Fig. 6 represents anaxial section taken in the line y y of Fig. 5. Figs. 7 and 8 represent afront and a side view of the die-holder. Fig. 9 is an axial section, andFig. 10 a top view showing a swaging-machine in which the opposite setsof dies may be operated to change their closing movement independentlyof each other.

In the accompanying drawings, A represents the supporting-table, uponwhichthe machine is set, B the stationary head or holding case for theswaging-dies, secured to the table by means of screws, and C thestandard for supporting the stud D, upon which is placed thelOOSGlY-l'GVOlVlllg sleeve E, to which is attached the pulley F, thesaid sleeve being provided with the inclined beaters G G for actuatingthe swaging-dies upon the rotation of the said sleeve, the said beatersbeing provided with a reduced cylindrical portion g, which enters asocket h in the sleeve E, by means of which the heaters will be firmlyattached to the sleeve.

The holding-case B is provided with the diametrical recesses H, adaptedto contain the dies and their operating-levers, the said dies beingoperated from bearing-pieces I, which are held in position by means ofthe grooves J J and the flanges J J, and to the said bearing-pieces Iare pivoted the toggle joint links K, the said links being jointed tothe levers L, to which are pivoted the dieholders M, the said connectedparts being guided in the oppositely-arranged arms a a of theholding-recesses H. The outer ends of the toggle-jointed levers L arepreferably provided with the antifriction-rollers 19, adapted forengagement with the heaters, the said rollers being held against therevolving sleeve E and the heaters attached thereto by means of thesprings N. The die 0 is held in the groove cl of the die-holder M bymeans of the clamping-piece O, which is attached to the die-holder M bymeans of the clamping- 7o screw P, the die-holder being held in positionwithin the arm a of the holding-recessH by means of the covering-plateQ, which is secured to the holding-case B by means of the screws f f.

Between the rear end of the sleeve E and the inner face of the standard0' is loosely placed the hand-operated cam-leverR, pro vided with theinclined surfaces g g, which rest against the correspondingly-inelinedsurfaces 77/ h at the inner face of the standard, and upon thebearing-stud D at the forward end of the sleeve E is placed the spiralspring 6, the said spiral spring being adapted to force the sleeve Eback toward the standard 0, so that the inclined surfaces g and h willbe kept in close contact with each other, and at any time when themachine is in operation the handle j of the cam-lever B may be movedupon the stud D, so as to carry the rotating 9o sleeve E farther forwardagainst the resilience of the spring c', thus bringing a higher portionof the inclined heaters G under the rollers b to cause an increasedclosing movement of the dies 0, and upon the reverse movement of thehandle j the inclined beaters G will be brought back to their originalposition by means of the spring i, so that the closing movement of thedies will be as before. The rollers 11 are preferably made rounding uponIoo their faces, in order to accommodate themselves to the varyinginclination of the levers L when subjected to the action of the beaters.Other means than the lever B may be conveniently employed to move theheaters forward to cause the required change in the closing movement ofthe dies, but the device shown and described is well adapted for thepurpose.

hen the revolving heaters are provided with a single incline k, as shownin Fig. 6, the forward movement of the heaters will cause theequally-changed movement of both sets of opposite dies, but in themachine shown in Figs. 9 and 10 the forward movement of the heaters willcause a reverse change in the opposite sets of dies, so that while oneset of dies will be closed down upon the Work the other set of dies willbe caused to recede, and in this case the heaters are formed with theopposite inclines k 70, the rollers b of the levers L of one set of diesbeing adapted for impulsion from one of the inclined surfaces of theheaters and the rollers b of the levers 'L of the opposite set of diesfrom the oppositely-inclined surface, and by the employment of the thetoggle-jointed levers L between the heaters and the dies a very powerfulclosing movement may be imparted to the said dies.

In the accompanying drawings the head B is represented as provided witha recess H, adapted for two sets of oppositely-actin g swaging-diesarranged at right angles to each other, but a machine having a singleset of opposite dies may be employed for many purposes, or a machinehaving three sets of oppositelyacting dies may he used, if desired.

I claim as my invention- 1. In a swaging-machine, the combination of theopposite swaging-dies, and the revolving heaters adapted for forward andbackward movement, with the toggle-jointed levers having a projectingarm adapted for engagement with the heaters, and means for moving theheaters forward and backward while the machine is in operation, substantially as described.

2. In a swaging-machine, the combination of the opposite swaging-dies,and the inclined revolving heaters, with the toggle-jointed levers,provided with rollers arranged on the long arms of the levers, toreceive the action of the heaters, substantially as described.

3. In a swaging-machine, the combination of the opposite swaging-dies,and the inclined revolving heaters, with the toggle-jointed levers,provided with tapering rollers, arranged on the long arms of the leversto receive the action of the heaters, substantially as described.

4. In a sWaging-machine, the combination of the sets of opposite dieswith the revolving heaters provided with opposite inclined surfaces, andconnections between the beaters and dies, whereby the sets of oppositedies may have an independent closing movement, substantially asdescribed.

JEROME O. TAFT.

\Vitnesses SocRATEs SOHOLFIELD, HARRY J. GARCEAU.

